i also have Diverticulitis so i feel your step dads pain.i have to watch what i eat as well.i also sometimes eat what i should not and man do i pay the price.well your bbq looks great sorta what we did at my house,lots of fun.
RPM for sure http://www.rpmrcproducts.com/products/losi/LSTParts.htm .....also get the lundsford turn buckles they are stronger than the rpm turn buckles that come with the arms http://www.lunsfordracing.com/mm5/merchant.mvc?Screen=PROD&Store_Code=LUNS&Product_Code=2821&Category_Code=